So I Am 27 Weeks N 3 Days Pregnant. I

so i am 27 weeks n 3 days pregnant. i have been experiencing cramp like pains here n there on my side and above my vagina. im not sure if im losing my mucus plug. and im pretty sure im having braxton hicks. and i also have had a lot of discharge. is this normal or something i should be worried about and contact my ob.